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Input: gpio_mouse - switch to using input device polling mode 

Now that instances of input_dev support polling mode natively,
we no longer need to create input_polled_dev instance.

Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2019-09-17 08:56:50 -07:00
parent 894616f792
commit 3df955f870
2 changed files with 20 additions and 26 deletions
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1
drivers/input/mouse/Kconfig
View File

@ -381,7 +381,6 @@ config MOUSE_VSXXXAA
config MOUSE_GPIO
tristate "GPIO mouse"
depends on GPIOLIB || COMPILE_TEST
select INPUT_POLLDEV
help
This driver simulates a mouse on GPIO lines of various CPUs (and some
other chips).

45
drivers/input/mouse/gpio_mouse.c
View File

@ -8,7 +8,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/input-polldev.h>
#include <linux/input.h>
#include <linux/gpio/consumer.h>
#include <linux/property.h>
#include <linux/of.h>
@ -43,10 +43,9 @@ struct gpio_mouse {
* Timer function which is run every scan_ms ms when the device is opened.
* The dev input variable is set to the the input_dev pointer.
*/
static void gpio_mouse_scan(struct input_polled_dev *dev)
static void gpio_mouse_scan(struct input_dev *input)
{
struct gpio_mouse *gpio = dev->private;
struct input_dev *input = dev->input;
struct gpio_mouse *gpio = input_get_drvdata(input);
int x, y;
if (gpio->bleft)
@ -71,18 +70,17 @@ static int gpio_mouse_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct gpio_mouse *gmouse;
struct input_polled_dev *input_poll;
struct input_dev *input;
int ret;
int error;
gmouse = devm_kzalloc(dev, sizeof(*gmouse), GFP_KERNEL);
if (!gmouse)
return -ENOMEM;
/* Assign some default scanning time */
ret = device_property_read_u32(dev, "scan-interval-ms",
&gmouse->scan_ms);
if (ret || gmouse->scan_ms == 0) {
error = device_property_read_u32(dev, "scan-interval-ms",
&gmouse->scan_ms);
if (error || gmouse->scan_ms == 0) {
dev_warn(dev, "invalid scan time, set to 50 ms\n");
gmouse->scan_ms = 50;
}
@ -112,23 +110,14 @@ static int gpio_mouse_probe(struct platform_device *pdev)
if (IS_ERR(gmouse->bright))
return PTR_ERR(gmouse->bright);
input_poll = devm_input_allocate_polled_device(dev);
if (!input_poll) {
dev_err(dev, "not enough memory for input device\n");
input = devm_input_allocate_device(dev);
if (!input)
return -ENOMEM;
}
platform_set_drvdata(pdev, input_poll);
/* set input-polldev handlers */
input_poll->private = gmouse;
input_poll->poll = gpio_mouse_scan;
input_poll->poll_interval = gmouse->scan_ms;
input = input_poll->input;
input->name = pdev->name;
input->id.bustype = BUS_HOST;
input->dev.parent = &pdev->dev;
input_set_drvdata(input, gmouse);
input_set_capability(input, EV_REL, REL_X);
input_set_capability(input, EV_REL, REL_Y);
@ -139,10 +128,16 @@ static int gpio_mouse_probe(struct platform_device *pdev)
if (gmouse->bright)
input_set_capability(input, EV_KEY, BTN_RIGHT);
ret = input_register_polled_device(input_poll);
if (ret) {
error = input_setup_polling(input, gpio_mouse_scan);
if (error)
return error;
input_set_poll_interval(input, gmouse->scan_ms);
error = input_register_device(input);
if (error) {
dev_err(dev, "could not register input device\n");
return ret;
return error;
}
dev_dbg(dev, "%d ms scan time, buttons: %s%s%s\n",